/* STRATUM · Cortés, Vergara & Asociados */
:root{
  --accent:#C9965E;          /* dorado del logo, ajustado para texto */
  --gold:#E0AE77;            /* dorado exacto del logo */
  --ink:#2C3844;             /* petróleo del logo */
  --ink-2:#1E2731;
  --base:#F4F3F0;
  --stone:#E9E8E4;
  --white:#fff;
  --text:#3E4955;
  --muted:#6B7580;
  --line:#DCDAD4;
  --radius:4px;
  --shadow:0 18px 40px -26px rgba(30,39,49,.45);
  --container:1250px;
  --gap:clamp(20px,3vw,36px);
  --serif:"Lora",Georgia,serif;
  --sans:"Hanken Grotesk",system-ui,sans-serif;
  --ease:cubic-bezier(.22,.61,.36,1);
  --header-h:84px;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:calc(var(--header-h) + 10px)}
body{margin:0;font-family:var(--sans);font-size:1.0625rem;line-height:1.7;color:var(--text);background:var(--white);-webkit-font-smoothing:antialiased}
img{max-width:100%;display:block;height:auto}
a{color:inherit}
h1,h2,h3,h4{font-family:var(--serif);font-weight:500;color:var(--ink);line-height:1.18;margin:0}
p{margin:0 0 1em}
.container{width:100%;max-width:var(--container);margin-inline:auto;padding-inline:24px}

/* Texto claro sobre fondos oscuros / imagen */
.hero,.page-hero,.cta,.section--dark{color:rgba(255,255,255,.86)}
.hero h1,.hero h2,.hero h3,.hero h4,
.page-hero h1,.page-hero h2,.page-hero h3,.page-hero h4,
.cta h1,.cta h2,.cta h3,.cta h4,
.section--dark h1,.section--dark h2,.section--dark h3,.section--dark h4{color:#fff}

/* Eyebrow: solo texto */
.eyebrow{display:block;font-family:var(--sans);font-size:.76rem;font-weight:600;letter-spacing:.24em;text-transform:uppercase;color:var(--accent);margin:0 0 7px}
.hero .eyebrow,.page-hero .eyebrow,.cta .eyebrow,.section--dark .eyebrow{color:var(--gold)}
.title{font-size:clamp(1.9rem,3.2vw,2.7rem);margin-top:15px;letter-spacing:.005em}
.title em,.hero h1 em{font-style:italic;color:var(--accent)}
.hero h1 em,.section--dark .title em,.cta .title em{color:var(--gold)}
.rule{display:block;width:64px;height:2px;background:var(--gold);margin:26px 0}
.lead{font-size:1.15rem;color:var(--muted)}

/* Botones */
.btn{display:inline-flex;align-items:center;gap:10px;padding:14px 26px;border-radius:var(--radius);font-weight:600;font-size:.88rem;letter-spacing:.12em;text-transform:uppercase;text-decoration:none;border:1px solid transparent;cursor:pointer;font-family:var(--sans);transition:background .25s var(--ease),color .25s var(--ease),border-color .25s var(--ease),transform .25s var(--ease)}
.btn--primary{background:var(--ink);color:#fff}
.btn--primary:hover{background:var(--accent);color:#fff}
.hero .btn--primary,.cta .btn--primary{background:var(--accent);color:#fff}
.hero .btn--primary:hover,.cta .btn--primary:hover{background:#b5824b}
.btn--ghost{background:transparent;border-color:var(--ink);color:var(--ink)}
.btn--ghost:hover{background:var(--ink);color:#fff}
.hero .btn--ghost,.cta .btn--ghost,.section--dark .btn--ghost{border-color:rgba(255,255,255,.55);color:#fff}
.hero .btn--ghost:hover,.cta .btn--ghost:hover{background:#fff;color:var(--ink)}
.btn:hover{transform:translateY(-1px)}

/* Header (siempre blanco) */
.site-header{position:sticky;top:0;z-index:90;background:#fff;box-shadow:0 1px 0 var(--line),0 8px 24px -20px rgba(0,0,0,.35)}
.site-header .container{display:flex;align-items:center;justify-content:space-between;height:var(--header-h);gap:24px}
.brand img{height:36.2px;width:auto}
.nav{display:flex;align-items:center;gap:30px}
.nav a{color:var(--ink);text-decoration:none;font-size:.82rem;font-weight:600;letter-spacing:.14em;text-transform:uppercase;white-space:nowrap;position:relative;padding:6px 0;transition:color .2s var(--ease)}
.nav a:not(.btn)::after{content:"";position:absolute;left:0;right:100%;bottom:0;height:2px;background:var(--gold);transition:right .3s var(--ease)}
.nav a:not(.btn):hover,.nav a.is-active{color:var(--accent)}
.nav a.is-active::after,.nav a:not(.btn):hover::after{right:0}
.nav .btn{padding:11px 20px;color:#fff;font-size:.78rem}
.nav .btn::after{display:none}
.nav .nav-cta-mobile{display:none}
.burger{display:none;background:none;border:0;width:44px;height:44px;cursor:pointer;padding:10px;color:var(--ink)}
.burger span{display:block;height:2px;background:currentColor;margin:5px 0;transition:transform .3s var(--ease),opacity .3s}
.burger[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.burger[aria-expanded="true"] span:nth-child(2){opacity:0}
.burger[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
.nav-backdrop{position:fixed;inset:0;z-index:70;background:rgba(20,27,34,.45);opacity:0;visibility:hidden;transition:opacity .3s}
.nav-backdrop.is-open{opacity:1;visibility:visible}

/* Hero */
.hero{position:relative;isolation:isolate;min-height:min(86vh,780px);display:flex;align-items:center;padding-block:90px;overflow:hidden;background:var(--ink)}
.hero__bg,.page-hero__bg,.cta__bg,.section__bg{position:absolute;inset:0;z-index:-2}
.hero__bg img,.page-hero__bg img,.cta__bg img,.section__bg img{width:100%;height:100%;object-fit:cover}
.hero::after{content:"";position:absolute;inset:0;z-index:-1;background:linear-gradient(90deg,rgba(30,39,49,.8) 0%,rgba(30,39,49,.72) 55%,rgba(30,39,49,.5) 100%)}
.hero__inner{max-width:760px}
.hero h1{font-size:clamp(2.3rem,4.8vw,3.9rem);margin-top:15px;letter-spacing:.005em}
.hero p{font-size:1.15rem;max-width:620px;margin-top:22px}
.hero__actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:34px}

/* Page hero */
.page-hero{position:relative;isolation:isolate;padding-block:clamp(90px,11vw,150px) clamp(70px,8vw,110px);overflow:hidden;background:var(--ink)}
.page-hero::after{content:"";position:absolute;inset:0;z-index:-1;background:linear-gradient(90deg,rgba(30,39,49,.8),rgba(30,39,49,.7))}
.page-hero h1{font-size:clamp(2.1rem,4vw,3.2rem);margin-top:15px}
.page-hero p{max-width:640px;margin-top:18px;font-size:1.1rem}

/* Secciones */
.section{padding-block:clamp(72px,9vw,120px)}
.section--stone{background:var(--base)}
.section--dark{position:relative;isolation:isolate;background:var(--ink);overflow:hidden}
.section--dark::after{content:"";position:absolute;inset:0;z-index:-1;background:linear-gradient(180deg,rgba(30,39,49,.78) 0%,rgba(30,39,49,.72) 100%)}
.section--plano::after{display:none}
.section-head{max-width:720px;margin-bottom:clamp(40px,5vw,64px)}
.section-head--center{margin-inline:auto;text-align:center}
.section-head--center .rule{margin-inline:auto}

.split{display:grid;grid-template-columns:1.05fr .95fr;gap:clamp(36px,6vw,90px);align-items:start}
.split--rev .split__media{order:-1}
.split__media{position:relative}
.split__media img{border-radius:var(--radius);aspect-ratio:4/5;object-fit:cover;width:100%}
.split__media::before{content:"";position:absolute;inset:22px -22px -22px 22px;border:1px solid var(--gold);border-radius:var(--radius);z-index:-1}
.split__media{isolation:isolate}

/* Áreas (tarjetas) */
.areas{display:grid;grid-template-columns:repeat(3,1fr);gap:var(--gap)}
.area{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;display:flex;flex-direction:column;text-decoration:none;transition:transform .35s var(--ease),box-shadow .35s var(--ease)}
.area:hover{transform:translateY(-4px);box-shadow:var(--shadow)}
.area__img{aspect-ratio:16/10;overflow:hidden}
.area__img img{width:100%;height:100%;object-fit:cover;transition:transform .6s var(--ease)}
.area:hover .area__img img{transform:scale(1.04)}
.area__body{padding:30px 30px 34px;display:flex;flex-direction:column;flex:1}
.area__num{font-family:var(--serif);font-size:.95rem;color:var(--accent);letter-spacing:.1em}
.area h3{font-size:1.4rem;margin:10px 0 14px}
.area p{color:var(--muted);font-size:.98rem}
.area__more{margin-top:auto;font-size:.78rem;font-weight:600;letter-spacing:.16em;text-transform:uppercase;color:var(--ink);display:inline-flex;gap:8px;align-items:center}
.area__more svg{width:16px;height:16px;transition:transform .3s var(--ease)}
.area:hover .area__more svg{transform:translateX(4px)}

/* Capas (principios) */
.layers{display:grid;grid-template-columns:repeat(3,1fr);gap:0;border-top:1px solid rgba(255,255,255,.2)}
.layer{padding:36px 32px 10px 0;border-right:1px solid rgba(255,255,255,.14)}
.layer + .layer{padding-left:32px}
.layer:last-child{border-right:0}
.layer svg{width:38px;height:38px;color:var(--gold);margin-bottom:20px}
.layer h3{font-size:1.35rem;margin-bottom:10px}
.layer p{font-size:.98rem}

/* Cita */
.quote{max-width:900px;margin-inline:auto;text-align:center}
.quote blockquote{margin:0;font-family:var(--serif);font-style:italic;font-size:clamp(1.45rem,2.6vw,2.1rem);line-height:1.45;color:#fff}
.quote cite{display:block;margin-top:26px;font-style:normal;font-size:.76rem;letter-spacing:.24em;text-transform:uppercase;color:var(--gold)}
.quote--light blockquote{color:var(--ink)}
.quote--light cite{color:var(--accent)}

/* Práctica detallada */
.practice{padding-block:clamp(72px,9vw,120px);border-bottom:1px solid var(--line)}
.practice:nth-of-type(even){background:var(--base)}
.practice__grid{display:grid;grid-template-columns:1fr 1fr;gap:clamp(36px,6vw,90px);align-items:start}
.practice--rev .practice__media{order:-1}
.practice__media img{border-radius:var(--radius);aspect-ratio:4/3;object-fit:cover;width:100%}
.practice__note{margin-top:28px;padding:22px 0 0;border-top:1px solid var(--gold);font-family:var(--serif);font-style:italic;font-size:1.12rem;color:var(--ink);line-height:1.55}
.checklist{list-style:none;padding:0;margin:20px 0 28px;display:grid;grid-template-columns:1fr 1fr;gap:10px 26px}
.checklist li{position:relative;padding-left:22px;font-size:.98rem;line-height:1.5;color:var(--ink)}
.checklist li::before{content:"";position:absolute;left:0;top:.62em;width:10px;height:2px;background:var(--gold)}
.practice__intro{font-weight:600;color:var(--ink);margin-top:22px}

/* Pilares nosotros */
.pillars{display:grid;grid-template-columns:repeat(2,1fr);gap:var(--gap)}
.pillar{padding:38px;border:1px solid var(--line);border-radius:var(--radius);background:#fff}
.pillar svg{width:36px;height:36px;color:var(--accent);margin-bottom:18px}
.pillar h3{font-size:1.35rem;margin-bottom:10px}
.pillar p{color:var(--muted);margin:0}

.sectors{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}
.sectors span{padding:9px 18px;border:1px solid var(--line);border-radius:999px;font-size:.88rem;color:var(--ink);background:#fff}

/* CTA */
.cta{position:relative;isolation:isolate;padding-block:clamp(80px,10vw,130px);overflow:hidden;background:var(--ink);text-align:center}
.cta::after{content:"";position:absolute;inset:0;z-index:-1;background:rgba(30,39,49,.76)}
.cta .title{max-width:760px;margin-inline:auto}
.cta p{max-width:600px;margin:18px auto 0}
.cta .hero__actions{justify-content:center}

/* Contacto */
.contact{display:grid;grid-template-columns:.9fr 1.1fr;gap:clamp(36px,6vw,80px);align-items:start}
.contact-list{list-style:none;padding:0;margin:28px 0 0;display:grid;gap:22px}
.contact-list li{display:flex;flex-direction:column;gap:4px}
.contact-list small{font-size:.74rem;letter-spacing:.2em;text-transform:uppercase;color:var(--muted);font-weight:600}
.ci{display:inline-flex;align-items:center;gap:10px;text-decoration:none;color:var(--ink);font-size:1.05rem}
.ci svg{width:18px;height:18px;flex:none;color:var(--accent)}
a.ci:hover{color:var(--accent)}
.form{background:var(--base);border:1px solid var(--line);border-radius:var(--radius);padding:clamp(28px,4vw,44px)}
.form__grid{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.field{display:flex;flex-direction:column;gap:7px}
.field--full{grid-column:1/-1}
.field label{font-size:.76rem;letter-spacing:.16em;text-transform:uppercase;font-weight:600;color:var(--ink)}
.field input,.field textarea{font:inherit;font-size:1rem;padding:13px 15px;border:1px solid var(--line);border-radius:var(--radius);background:#fff;color:var(--ink);transition:border-color .2s}
.field input:focus,.field textarea:focus{outline:0;border-color:var(--accent)}
.field textarea{min-height:150px;resize:vertical}
.form .btn{margin-top:24px}
.form-alert{display:none;padding:14px 18px;border-radius:var(--radius);margin-bottom:22px;font-size:.96rem}
.form-alert.is-ok{display:block;background:#E7F3EA;color:#1F5B32;border:1px solid #B9DCC2}
.form-alert.is-err{display:block;background:#FBEAEA;color:#8A1F1F;border:1px solid #EBC2C2}

/* Footer */
.site-footer{background:var(--ink-2);color:rgba(255,255,255,.68);padding-block:clamp(52px,6vw,74px) 30px;font-size:.95rem}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1.3fr;gap:clamp(30px,5vw,70px)}
.footer-brand img{width:250px;height:auto;margin-bottom:22px}
.footer-brand p{max-width:340px;margin:0}
.site-footer h4{font-family:var(--sans);font-size:.76rem;letter-spacing:.22em;text-transform:uppercase;color:var(--gold);margin-bottom:18px;font-weight:600}
.footer-links{list-style:none;padding:0;margin:0;display:grid;gap:9px}
.footer-links a{text-decoration:none;transition:color .2s}
.footer-links a:hover{color:#fff}
.site-footer .ci{color:rgba(255,255,255,.78);font-size:.95rem}
.site-footer .ci svg{color:var(--gold)}
.site-footer a.ci:hover{color:#fff}
.footer-credit{margin-top:40px;padding-top:22px;border-top:1px solid rgba(255,255,255,.12);text-align:center;font-size:.8rem;color:rgba(255,255,255,.6)}
.footer-credit a{color:inherit;text-decoration:none;transition:color .22s var(--ease)}
.footer-credit a:hover{color:rgba(255,255,255,.92)}

/* Reveal */
.js .reveal{opacity:0;transform:translateY(22px);transition:opacity .8s var(--ease),transform .8s var(--ease);animation:reveal-failsafe 0s linear 3s forwards}
@keyframes reveal-failsafe{to{opacity:1;transform:none}}
.reveal.is-visible{opacity:1;transform:none;animation:none}
.js .reveal[data-delay="1"]{transition-delay:.1s}
.js .reveal[data-delay="2"]{transition-delay:.2s}
.js .reveal[data-delay="3"]{transition-delay:.3s}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .js .reveal{opacity:1;transform:none;transition:none;animation:none}
  *{transition-duration:.01ms!important;animation-duration:.01ms!important}
}

/* Responsive */
@media (max-width:1100px){
  .burger{display:block}
  .nav{position:fixed;top:0;right:0;height:100vh;width:min(340px,86vw);background:#fff;flex-direction:column;align-items:flex-start;gap:4px;padding:100px 32px 32px;transform:translateX(100%);transition:transform .4s var(--ease),box-shadow .4s;z-index:80}
  .nav.is-open{transform:none;box-shadow:-20px 0 50px -20px rgba(0,0,0,.35)}
  .nav a{font-size:.9rem;padding:12px 0;width:100%}
  .nav a:not(.btn)::after{display:none}
  .nav .nav-cta-desk{display:none}
  .nav .nav-cta-mobile{display:inline-flex;margin-top:18px;width:auto;padding:13px 22px}
  .burger{position:relative;z-index:85}
}
@media (max-width:1024px){
  .areas{grid-template-columns:1fr 1fr}
  .footer-grid{grid-template-columns:1fr 1fr}
  .footer-brand{grid-column:1/-1}
}
@media (max-width:880px){
  .split,.practice__grid,.contact{grid-template-columns:1fr}
  .split--rev .split__media,.practice--rev .practice__media{order:0}
  .split__media img{aspect-ratio:16/11}
  .split__media::before{display:none}
  .layers{grid-template-columns:1fr}
  .layer,.layer + .layer{padding:28px 0;border-right:0;border-bottom:1px solid rgba(255,255,255,.14)}
  .pillars{grid-template-columns:1fr}
}
@media (max-width:560px){
  :root{--header-h:72px}
  .brand img{height:26.6px}
  .areas,.footer-grid,.form__grid,.checklist{grid-template-columns:1fr}
  .hero{min-height:auto;padding-block:80px}
  .btn{padding:13px 20px}
}